package com.atguigu.eduservice.controller;


import com.atguigu.commentutils.R;
import com.atguigu.eduservice.entity.EduTeacher;
import com.atguigu.eduservice.entity.vo.TeacherQuery;
import com.atguigu.eduservice.service.EduTeacherService;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;

import java.util.List;

/**
 * <p>
 * 讲师 前端控制器
 * </p>
 *
 * @author testjava
 * @since 2022-09-28
 */
@Api(description = "讲师管理")
@RestController
@RequestMapping("/eduservice/teacher")
public class EduTeacherController {

    //注入service
    @Autowired
    private EduTeacherService teacherService;

    //rest风格
    //查询讲师表所有数据
    @ApiOperation(value = "所有讲师列表")
    @GetMapping("findAll")
    public R findAll(){
        //调用service的方法实现查询所有的操作
        List<EduTeacher> list = teacherService.list(null);
        return R.ok().data("items",list);
    }

    //逻辑删除讲师的方法
    @ApiOperation(value = "逻辑删除讲师")
    @DeleteMapping("{id}")
    public R removeTeacher(@ApiParam(name = "id" ,value = "讲师ID" ,readOnly = true) @PathVariable String id){
        boolean flag = teacherService.removeById(id);
        if (flag){
            return R.ok();
        }else {
            return R.error();
        }
    }

    // 分页查询讲师的方法
    @ApiOperation(value = "分页查询讲师")
    @GetMapping("pageTeacher/{current}/{limit}")
    public R pageListTeacher(@ApiParam(name = "current",value ="当前页",readOnly = true) @PathVariable long current,
                             @ApiParam(name = "limit", value = "每页显示记录数",readOnly = true) @PathVariable long limit){

        //创建page对象
        Page<EduTeacher> pageTeacher = new Page<>(current,limit);
        //调用方法是，底层封装，把分页所有的数据封装到pageTeacher中
        teacherService.page(pageTeacher,null);

//        try {
//            int i = 10/0;
//        }catch (Exception e){
//            //执行自定义异常
//            throw new GuliException(20001,"执行了自定义异常");
//        }

        long total = pageTeacher.getTotal();//总记录数
        List<EduTeacher> records = pageTeacher.getRecords();//数据List集合

        //第一种方法
//        Map map = new HashMap();
//        map.put("total",total);
//        map.put("rows",records);
//        return R.ok().data(map);

        //第二种方法
        return R.ok().data("total",total).data("rows",records);
    }

    //4.条件查询带分页的方法
    /**
     * @RequestBody：需要使用post提交方式
     *               使用json传递数据，把json数据封装到对应对象里面
     *      @RequestBody(required = false): 表示参数值可以为空
     * @param current
     * @param limit
     * @param teacherQuery
     * @return
     */
    @ApiOperation(value = "条件查询讲师带分页")
    @PostMapping("pageTeacherCondition/{current}/{limit}")
    public R pageTeacherCondition(@ApiParam(name = "current",value ="当前页",readOnly = true) @PathVariable long current,
                                  @ApiParam(name = "limit", value = "每页显示记录数",readOnly = true) @PathVariable long limit,
                                  @RequestBody(required = false) TeacherQuery teacherQuery){
        //创建page对象
        Page<EduTeacher> pageTeacher = new Page<>(current,limit);
        //构建条件
        QueryWrapper<EduTeacher> wrapper = new QueryWrapper<>();
        //多条件查询
        //mybatis 动态sql
        String name = teacherQuery.getName();
        Integer level = teacherQuery.getLevel();
        String begin = teacherQuery.getBegin();
        String end = teacherQuery.getEnd();
        //判断条件值是否为空，如果不为空拼接条件
        if (!StringUtils.isEmpty(name)){
            //构建条件,字段名称
            wrapper.like("name",name);
        }
        if (!StringUtils.isEmpty(level)){
            wrapper.eq("level",level);
        }
        if (!StringUtils.isEmpty(begin)){
            wrapper.ge("gmt_create",begin);
        }
        if (!StringUtils.isEmpty(end)){
            wrapper.le("gmt_modified",end);
        }

        //调用方法实现条件查询分页
        teacherService.page(pageTeacher, wrapper);
        long total = pageTeacher.getTotal();
        List<EduTeacher> records = pageTeacher.getRecords();
        return R.ok().data("total",total).data("records",records);
    }

    //5.添加讲师接口的方法
    @ApiOperation(value = "新增讲师")
    @PostMapping("addTeacher")
    public R addTeacher(@RequestBody EduTeacher eduTeacher){
        boolean save = teacherService.save(eduTeacher);
        if (save){
            return R.ok();
        }else{
            return R.error();
        }
    }

    //根据讲师id进行查询
    @ApiOperation(value = "根据ID查询讲师")
    @GetMapping("getTeacher/{id}")
    public R getTeacher(@PathVariable String id){
        EduTeacher eduTeacher = teacherService.getById(id);
        return R.ok().data("teacher",eduTeacher);
    }

    //讲师修改
    @ApiOperation(value = "根据ID修改讲师")
    @PostMapping("updateTeacher")
    public R updateTeacher(@RequestBody EduTeacher eduTeacher){
        boolean flag = teacherService.updateById(eduTeacher);
        if (flag){
            return R.ok();
        }else{
            return R.error();
        }
    }
}

